Bottle cap



Dec. 4, 1928.

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J. TRISKA BOTTLE GAP Filed May 5, 1928 attain,

Patented Dec. 4, 19 28 JOSEPH TRISKA, or OMAHA, NEBRASKA.

. BOTTLE CAP.

Application filed May s, 1923. Serial No. [274,834.

My invention relates to- :caps for use on bottles and the like having att-he end of the neck an external lip or bead, such as is commonly provided for use with acrimped or crown? cap. lt is the object of my invention to provide forbottles of this-class a cap which may he applied to and removed from the bottle by hand, without the use'ot' tools or instruments of any kind, and. which may beused repeatedly or as often as. desired. further object of my invention isto provide a bottle cap of the class mentioned, which will effectively seal abottle to which it is ap plied, so as'to retain therein a considerable pressure, as'of carbonated liquids but which is; capable of yielding to allow the escape gas should the pressure become excessive. and which will automatically resume a sealing position when the pressure is reduced to normal. A further object of my invention is to provide a cap of this character which may be applied to bottles of which the lips or headset the ends of the necks are of slightly varying sizes. In the accompanying drawings Fig. l is a plan view of a cap embodying my invention, Fig. 2 is a bottom view of the same, Fig. 3 is a plan View of the body-blank of the cap, Figs. 4 and 5arc. side views of the cap, showing the right and leftsides,respectively,1Fig. dis a front end view a vertical sectional View of the cap in sealing position upon a bottle, and F lg. 8 isa similar view showing the cap in a released position;

In carrying out my invention" according to the illustrated embodiment thereof, the principal member of the device is an integral body of heavy sheet-metal, which may be r-eaoily of the same, Fig; 7 is produced by punching from a: flat plate or sheet a body-blank of the form shown in Fig. 3, and subsequently bending and swagine; said blank to the completed formation. Said sheet-metal body comprises a. main central or plate portion 10, having at opposite side thereof parallel flanges 11 and 12 extending down at rightang'les to the plate portion 10, saidv flanges being formed by bending the body-blank along, the dotted lines 13 in F 2-3, and the plate having at its rear ,end-a'lug or tongue 14 curled about an axis transverse to the flanges 11 and 12, to extend in diag onally beneath the rear portion of the plate. The lower end of the tongue let is concave in outline, to conform approximately with the curvature of the bottle-neck to which the cap is to be applied, and the side-flanges 11 and 12 are so spaced apart as to straddle loosely over the end adjoin tion 25 u'iaybe forced wardly upon the the bead or lip of the bottle-neck, I The central portion oil the? plate is preferably swaged downwardly to form a flat circular boss on the lower side of the plateand' a corresponding depression or recess 15 in the upper sloethereot. .The flange 11 extended torwardly from the portion thereof connects ing with-the plate 10, ands-aid front portion is flared to form a sector-shaped headlti hav} mg in its arcuatc ed go a plurality otnotches 17, said edge being subst ntially concen "ic. with a hole 18 which is alined with a hole 19. in thefront portion of theopposite flange 12. The head 16 may also be shaped laterally toprovide small corrugations extcndin radially toward the hole 18 from the notched edge. On the lower side i the plate 10,'betwcen the flair is disposed a circular gasket 20 of compressi ble ii'iaterial such as 'lllb'llol," which may be secured to the plate by suitable cement.

Mounted ,pivotally in the transversely alincd holes. 18 and 19in the side-fiangesot the cap-body, is the hey-shaft 21' which is T OFFICE.

transversely ges 11 and 12,

made of springavir 'the portion interi'ne-- diate the side-flanges being bowed laterally the shaft-axis best shown Fi'gi-if l and 2, and: a grip or handle 2'1, tor turning the shaft, being formed integrally therewith at the side-tlangz e l1. Said grip. or handle, comprises an oblong loop of the wire, lying in approximately' the same plane as the lateral bow or c an]; 22, theclos' l end of the loop being at shalt-axis as said lateral bow. Atthe open end of the loop the terminal portion extend-ed in oiagonally of the shalt-axis, said terminal portion being adapted to pass over the notched'arcuate edge or the head 1b and to norn'iallyeng the innersidc of said tread; whereby to prevent the withdrawal of the shaft trom the holes 18 nd 19. To enable assemblingthereof, the parts are so propertioncd that by turning the handle-loop 2t" slightly. rearward from the vertical position shown in Fig; 8,.theaezid-ot the diagonal porthe head 16 by a slight distortion of the loop, which resumes its normal form atterthe as sembly is completed. in the operative positions oft the keyshatt; the diagonal member 25 engages the notched portion of the head 16and serves to retain the shaft in adjusted positions. By pushing in same as indicated by the dotted lines in Fig.

the same side of the over the upper edge oi I handle-loop, to distort the llfr and corrugated edge r bodyto be liftedby'pressure within the bot- 1, the mei'nber 25 is disengaged from the head i i 16, so that the shaft may be freely turned.

' a bottle, the cap is laid bottle, with the side-fianges 11 and 12 strad dling the neck, and a tongue leengagingthe In the use of the described cap forsealing over the mouth of the lip or bead 26 at one side of the neck, as shown in Fig. 8. Then, while holding the capdown upon the neck in the described position, the

handle 24 of the key-shaft is turned forwardly, in the directionof the,

whereby the bow or crank 22 of the shaft is engaged with the lip 26 at the side of the neck oppositefthe tongue 14, and the cap is thereby pulled forwardly and downwardly to arrow in Fig; 8,

the sealing position shown in Fig. 7 and is retained in said position bythe engagement of i r the member 25 in one of the notches 17 of the head 16. For releasing the cap, the handle loop is merely pushed inwardly, toward'the' head 16, as indicated by dotted lines in Fig.

1, to thus disengage the member fromthe "notch in which it is engaged, after which the key-shaft tends to automatically assume a released position, such as shown in Fig. 8. The

tendency of the key-shaft to assume a release position results from the fact that the closing or sealing operation compresses the gasket 20 a and also places the shaft and'handle-loop 24:

under a torsional stress, both of which are relieved by the releasing movement. The provision of a plurality of the notches 17 for holding the key-shaft in sealing or closing position, enables the cap to be applied to bottles of which the lips or heads at the ends of the necks; are of slightly varying sizes, and

' also enables a variation of the sealing-tension upon the parts, it being obvious that the pres sure exerted by the capkbody against the gasket 20 is proportional to the torsional stress in the key-shaft between the terminal member 25 and the portion or the bow or crank 22 which engages the head 26 on the bottle.- The torsional resilience of the keyshaft and its handle-loop 24 allows the captle, as when the same contains'carbonated liquids, should the pressure become great enough to overcome the torsional stress ap plieclto the shaft in closing the cap, and when the excessive pressure has been released by the lifting of the cap, the latter will resume its sealing position to retain the desired normal pressure w1th1n the bottle; 7 Now, having described my lnventiomwhat 1 I claim and desiretosecure by Letters Patent is: i

1. In a bottle-cap of the class described, a

metal plate having downwardly extending side-flangesladapted to straddlethe'bead of a bottle-neck, and having at one end a tongue adapted to extend beneath said head, a key shaft mounted rotatably and extending transgversely between said side-flanges at the end opposite said tongue and having a bowed intermediate portion adapted to engage the shaft in adjusted positions.

2. In a bottle-cap of the class described,

metal plate adapted to fitover the mouth of a bottle and having at one end thereof atongue neck-bead, and means for retaining the key- V adapted to'extend about the beadof the bot- V tie-neck to engage the lower side of said bead,

a shaftjpivotally connected with said plate and extendin transverselyther'eof at the end opposite sai crank-portionadapted for engagement neath the neck-bead topull theplate toward thesame, and meansfor yieldingly retaining the shaft in adjusted positions.

tongue, said shaft havingb a 3. In a bottle-cap'of the class described, a

compressible member fitting over the mouth of the bottle, a metal plate covering said mem ber and having a hooked tongue extending about the bead of the bottle-neck at one side thereof, a shaft mounted pivotally beneath the plate and having a crank portion extendof the bottle, a metal plate covering said gasket and having "opposite side-flanges straddling the beadof the bottle-neck, a I hooked tongue at one end of said plate-ex-;

tending about the neck-bead to engage the lower side thereof, a shaft of springy material ournaled in the side-flanges, at the end opposite said tongue, said shaft having a;

central crank-portion adapted to' engage the neck-bead to pull the latetoward the same, a handle-loop forme integrally with said shaft at one end thereof, andfa head carried by one of the side-flanges and having-a notched arcuate edge substantially concentric with the shaft-axis, the terminal portion of the handle-loop extending'over said arcuate edge ofsaid head to prevent withdrawal of the shaft from the side-flanges andto re-y leasably engage the I p JOSEPH TRISKA.

notches in saidedge. 7

no a 

